202129245 has 12 divisors (see below), whose sum is σ = 350357436. Its totient is φ = 107802240.

The previous prime is 202129243. The next prime is 202129253. The reversal of 202129245 is 542921202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 158608836 + 43520409 = 12594^2 + 6597^2 .

It is not a de Polignac number, because 202129245 - 2¹ = 202129243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202129241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2245836 + ... + 2245925.

It is an arithmetic number, because the mean of its divisors is an integer number (29196453).

Almost surely, 2^202129245 is an apocalyptic number.

It is an amenable number.

202129245 is a deficient number, since it is larger than the sum of its proper divisors (148228191).

202129245 is a wasteful number, since it uses less digits than its factorization.

202129245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4491772 (or 4491769 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 202129245 is about 14217.2164997231. The cubic root of 202129245 is about 586.8715428486.

The spelling of 202129245 in words is "two hundred two million, one hundred twenty-nine thousand, two hundred forty-five".